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1、IEEEJOURNALOFSOLID-STATECIRCUITS,VOL.32,NO.8,AUGUST19971231ADynamicAnalysisoftheDicksonChargePumpCircuitToruTanzawaandTomoharuTanakaAbstractDDynamicsoftheDicksonchargepumpcircuithaveinsteadystateisderivedasafunctionoftheoutputvoltage.beenanalyzed.Thea
2、nalyticalresultsenabletheestimationoftheNext,thetotalchargeconsumedbythechargepumpduringrisetimeoftheoutputvoltageandthatofthepowerconsumptionboostingisobtainedbytwodifferentmethods;byusingtheduringboosting.Byusingthisanalysis,theoptimumnumberchargest
3、oredineachcapacitorandbyusingthesumofofstagestominimizetherisetimehasbeenestimatedas1.4Nmin,whereNministheminimumvalueofthenumberofstagesthechargeconsumedbythechargepumpinonecycletime.necessaryforagivenparametersetofasupplyvoltage,thresholdThen,combin
4、ingthesetotalchargeestimationsderivedbythevoltagesoftransferdiodes,andaboostedvoltage.Moreover,twomethods,arecurrenceformulafortheoutputvoltageistheself-loadcapacitanceofthechargepump,whichshouldbederived.Asaresult,therisetimeandcurrentconsumptionchar
5、gedupatthesametimeastheoutputloadcapacitanceofachargepumpwithanarbitrarynumberofstagescanbeofthechargepump,hasbeenestimatedasaboutone-thirdofthetotalchargepumpcapacitance.Asaresult,theequivalentcalculatedfromtheinitialcondition.Theloadcapacitanceofcir
6、cuitofthechargepumphasbeenmodi?ed.Theanalyticalthechargepumpitselfisestimatedandtheequivalentcircuitresultshavebeeningoodagreementwiththesimulationresultsofthechargepumpismodi?ed.InSectionIII,theaccuraterisebytheiterationmethod,typicallywithin10%forth
7、erisetimetimeandcurrentconsumptionarecomputedbytheiterationandwithin2%forthepowerconsumption.Incaseofachargemethod.InSectionIV,inordertoverifythedynamicanalysis,pumpwithMOStransfertransistors,theanalyticalresultoftherisetimehasagreedwiththeSPICEsimula
8、tionwithin10%.itsresultsarecomparedwiththeiterationmethodandtheSPICEsimulation.InSectionV,itisshownthatthereareaIndexTermsDChargepumpcircuit,equivalentcircuit,opti-numberofstagestominimizetherisetimeundertheconditionmumnumberofstages,powercons
